Stops the loading indicator in the pull-to-refresh element and hides the element by updating
the last refresh time. By default the DateTime.Now value is used but a custom value can be provided
as an optional parameter.

Stops the loading indicator in the pull-to-refresh element and hides the element by updating
the last refresh time if required. By default the DateTime.Now value is used but by using the UpdateRefreshTime
method a different DateTime value can be provided.